Bake-oven



2 Sheets-Sheet 1.

(No Model.)

W. H. ALBAGH.

BAKE OVEN.

Patented July 1, 1884.

INVENTOR ATIORNEYS 1 (N del.) 2 Sheets-Sheet 2.

, W. H. ALBAGH,

BAKE OVEN. N0.301,819.' Patented Ju1y'1,1884.'

WITNESSES INV ENIOR N. PETERS. Phuw-L nnnn nn nnnnnnnnnnnnnnnn c.

Unirnn drains Parent tries.

XV. HARRISON ALBACH, OF MANSFIELD, OHIO.

BAKE-(JVEN.

SPECIFICATION forming part of Letters Patent No. 301,319, dated July 1,1884.

Application filed November :21, 1883.

To all whom it may concern:

Be it known that I, W. IIARRISON Ann-ion, of Mansfield, in the county ofltichland and State of Ohio, have invented certain new and usefulImprovements in Bake-Ovens; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

My invention relates to improven'ients in bake-ovens, designed moreespecially for oil and gasoline stoves; and it consists in certainfeatures of construction and in combination of parts, hereinafterdescribed, and pointed out in the claims.

In the drawings, Figure 1 is a view in perspective of my improvedbake-oven. Fig. 2 is a vertical section of the same. Fig. 3 is a view inperspective of a heating-chamber constituting a part of the device. Fig.4 is a plan view of the blank sheet of metal from which the chamber ismade. Fig. 5 is a plan view of the bottom of the oven with a portionbroken away to show the heater.

A represents the outer shell of the oven, that is preferably rectangularin form, and constructed of sheet metal, and provided with the door A. Bis an inner lining, of sheettin, that extends over all parts'of theoven,

except the bottom, and has attached on oppo-' site sides ribs 1), thatsupport one or more removable plates, C, and that may support alsoperforated or grated shelves, 011 which articles are placed for baking.Between the outer and inner parts, A and B, is an inter mediate lining,B, of asbestus. The door is also lined with tin and asbestus in the samemanner. By this construction the heat is retained and utilized in theoven, the radiation of heat through the asbestus lining being merelynominal. The lining of tin makes it easy to keep the inside of the ovenclean and bright, so that the top and sides "reflect back the heattoward the central part, thereby greatly increasing the effectivenessofthe oven, and by means of which the baking on top is done as soon ason the bottom. I The lining B at b is swelled out, as shown in Fig. 2,forming a ledge that extends around the oven,and that forms a guide andpartial support for the heating-chamber D. The cavity inside of the (Nomodel.)

ledge is filled with asbestus or some nonconducting material, so thatnoheat can escape at this point. chamber D is formed of a single pieceof sheet metal. The blank D from which it is made is shown in Fig; 4-.The dotted lines show where the blank is bent informing the chamber, andthe blank is provided with the slits D and the ears D",th at when thesides are bent into position engage and interlock each other and holdthe sides firmly together. The sloping sides are lined with asbestus, asshown at d, Fig. 2. At the bottom the metal is bent outward, forming thesupporting-flanges (1 The top part is corrugated, as shown in Figs. 1,3, and 4, to admit of the disks expanding and contracting withoutmaterially changing the form of the heater or causing too great a strainon the parts. It is desirable that the heating-chamber remain always ofthe same form and size, so that it will nicely lit the oven at theirpoints of contact. The top part or disk of the said chamber is, however,subjected to intense heat, and therefore to great expansion, to whichthe sides, if made vertical, could offer but slight resistance; but inthe sloping or inclined position in which the sides are placed, thetensile strength of the metal is had to resist the outward thrust of theexpanding disk. This tensile strength of the sides is much greater thanthe expansive force of the disk, which is measured by its stiffness. Thedisk is therefore held firmly in every direction by the sides, so thatits expansion has to be accommodated by the corrugations thereof, andthe outer part of the chamber remains substantially the same regardlessof the expansion or contraction of the disk. The outer shell, A, has abottom of sheet metal extending inward far enough to form a support forthe flange d as shown in Fig. 5, and is lined at this point withasbestns m, upon which the said flanges rest, that prevents the escapeof heat in this direction. An air-chamber, M, is thus formed around theheating-chamber that aids in re taining the heat in the heating-chamber,and also aids in maintaining an equal temperature of the parts.The-opening in the central portion of the bottom that is directly on thefire below admits the heat into the chamber D. Heretofore with ovens forthe classes of The hopper-shapedheatingstovesaforesaidtheheathascitherbecn carried shell or oven properand a hopper-shaped around the oven and out of the stove ,or beenheating-chamber, in contact with each other admitted directly into theoven, carrying with it the smoke and gases produced by the combustionbelow. This with my construction is of course prevented by the heatpassing first into the heating-chamber, and is supplied to the oven onlyas it is transmitted through the said disk. The result is the baking isdone quickly, and the juices and peculiar flavor of the articles areretained in a remarkable degree. The slide 0 is composed of tin on thebottom and asbestus on top, and is placed on any of the ribs above andas near the artieles that are to be baked as is practicable, so as toconfine the heat in a small space.

What I claim is- 1. In a bake-oven, a heating chamber located betweenthe fire and the baking-chamber, and constructed of a single piece ofsheet metal, the top thereof or disk being corrugated, and the sidessloping inward, and the sides lined with asbestus, substantially as setforth.

2. In a bake-oven, the combination of-thc only at the upper and lowerextremes of the latter, and adapted to form an air-space around theheating-cl1amber, substantially as set forth.

8. In a bake-oven, the combination of an outer shell and an innerheating-chamber, so arranged as to form an air-chamber, the points ofcontact between the two parts being pro-' teeted by an asbestus liningto prevent the passage of heat through the points of contact,substantially as set forth.

4. The combination, with an oven having ribs formed on opposite sidesthereof, of the removable plate 0, consisting, essentially, of ametallic reflecting-surface below and a lining of asbestus above,substantially as set forth.

In testimony whereof I sign this specification, in the presence of twoWitnesses, this 6th day of November, 1883.

XV. HARRISON ALBA-CH.

ALRER'I. E. LYNCH.

